Bioaccumulation vs Biomagnification

Toxin concentrations (a)   as you go up the food chain.

• do not change

• increase

• decrease

In which organism would biomagnification be the most concentrated? (Remember the lab: Rabbits eat the grass, the snake eats the rabbit, the hawk eats the snake--the hawk is the apex predator) (a)  

• grass

• rabbit

• snake

• hawk

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

In bioaccumulation, the concentration of toxin

• increases in the body of the organism.

• decreases in the body of the organism.

• remains the same in the body of the organism.

Which organism is mostly affected in biomagnification in the following?

• the producer

• the primary consumer

• the secondary consumer

• the tertiary consumer

In biomagnification, the amount of toxin

• decreases in concentration along the food chain

• remains the same along the food chain

• increases along the food chain

Which organism in the food web shown to the right would

contain the lowest concentration of chemical pollutants?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

Tags

NGSS.MS-LS2-3

The phenomenon by which toxins concentrate in the organisms at higher trophic levels within an ecosystem is known as...

• Biotoxicity

• Biomagnification

• Eutrophication

• Predation

Tags

NGSS.MS-LS2-3

What is the primary difference between bioaccumulation and biomagnification?

• Bioaccumulation occurs within a single organism, while biomagnification occurs across trophic levels.

• Bioaccumulation occurs across trophic levels, while biomagnification occurs within a single organism.

• Bioaccumulation and biomagnification are the same process.

• Bioaccumulation decreases toxin levels, while biomagnification increases them.

Which of the following best describes bioaccumulation?

• The increase in toxin concentration in an organism over time.

• The decrease in toxin concentration in an organism over time.

• The constant toxin concentration in an organism over time.

• The transfer of toxins from one organism to another.

In an aquatic food chain, which organism is likely to have the highest concentration of toxins due to biomagnification?

• Phytoplankton

• Zooplankton

• Small fish

• Large predatory fish